Android DialogFragment中的位图错误

我正在开发一个应用程序，它接收来自其他应用程序的事件（登录尝试），然后在对话框片段中显示登录过程的结果。登录是通过指纹识别完成的，因此在结果中我需要显示指纹图像（这是一个位图）

该对话框工作正常，我没有收到任何错误，但问题是：如果用户尝试快速登录，有时我在显示图像时会收到此错误：

W/dalvikvm( 1830): threadid=1: thread exiting with uncaught exception (group=0x2bf4efc0)
E/AndroidRuntime( 1830): FATAL EXCEPTION: main
E/AndroidRuntime( 1830): java.lang.RuntimeException: Canvas: trying to use a recycled bitmap android.graphics.Bitmap@2cd4a720
E/AndroidRuntime( 1830):    at android.graphics.Canvas.throwIfRecycled(Canvas.java:1026)
E/AndroidRuntime( 1830):    at android.graphics.Canvas.drawBitmap(Canvas.java:1127)
E/AndroidRuntime( 1830):    at android.graphics.drawable.BitmapDrawable.draw(BitmapDrawable.java:393)
E/AndroidRuntime( 1830):    at android.view.View.draw(View.java:13443)
E/AndroidRuntime( 1830):    at android.view.View.draw(View.java:13342)
E/AndroidRuntime( 1830):    at android.view.ViewGroup.drawChild(ViewGroup.java:2929)
E/AndroidRuntime( 1830):    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2799)
E/AndroidRuntime( 1830):    at android.view.View.draw(View.java:13461)
E/AndroidRuntime( 1830):    at android.view.View.draw(View.java:13342)
E/AndroidRuntime( 1830):    at android.view.ViewGroup.drawChild(ViewGroup.java:2929)
E/AndroidRuntime( 1830):    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2799)
E/AndroidRuntime( 1830):    at android.view.View.draw(View.java:13461)
E/AndroidRuntime( 1830):    at android.view.View.draw(View.java:13342)
E/AndroidRuntime( 1830):    at android.view.ViewGroup.drawChild(ViewGroup.java:2929)
E/AndroidRuntime( 1830):    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2799)
E/AndroidRuntime( 1830):    at android.view.View.draw(View.java:13340)
E/AndroidRuntime( 1830):    at android.view.ViewGroup.drawChild(ViewGroup.java:2929)
E/AndroidRuntime( 1830):    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2799)
E/AndroidRuntime( 1830):    at android.view.View.draw(View.java:13340)
E/AndroidRuntime( 1830):    at android.view.ViewGroup.drawChild(ViewGroup.java:2929)
E/AndroidRuntime( 1830):    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2799)
E/AndroidRuntime( 1830):    at android.view.View.draw(View.java:13461)
E/AndroidRuntime( 1830):    at android.widget.FrameLayout.draw(FrameLayout.java:467)
E/AndroidRuntime( 1830):    at com.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:2188)
E/AndroidRuntime( 1830):    at android.view.ViewRootImpl.drawSoftware(ViewRootImpl.java:2326)
E/AndroidRuntime( 1830):    at android.view.ViewRootImpl.draw(ViewRootImpl.java:2221)
E/AndroidRuntime( 1830):    at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:2089)
E/AndroidRuntime( 1830):    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1864)
E/AndroidRuntime( 1830):    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1032)
E/AndroidRuntime( 1830):    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4282)
E/AndroidRuntime( 1830):    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
E/AndroidRuntime( 1830):    at android.view.Choreographer.doCallbacks(Choreographer.java:555)
E/AndroidRuntime( 1830):    at android.view.Choreographer.doFrame(Choreographer.java:525)
E/AndroidRuntime( 1830):    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
E/AndroidRuntime( 1830):    at android.os.Handler.handleCallback(Handler.java:615)
E/AndroidRuntime( 1830):    at android.os.Handler.dispatchMessage(Handler.java:92)
E/AndroidRuntime( 1830):    at android.os.Looper.loop(Looper.java:137)
E/AndroidRuntime( 1830):    at android.app.ActivityThread.main(ActivityThread.java:4745)
E/AndroidRuntime( 1830):    at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime( 1830):    at java.lang.reflect.Method.invoke(Method.java:511)
E/AndroidRuntime( 1830):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
E/AndroidRuntime( 1830):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
E/AndroidRuntime( 1830):    at dalvik.system.NativeStart.main(Native Method)

我显示/回收图像的代码如下：

public class FingerprintSettableImage implements SettableResultImage {

    private final FingerPrintImageModel image;

    private static Object lock = new Object();


    private static final String TAG = FingerprintSettableImage.class
            .getCanonicalName();

    private static Bitmap previousFPImage = null;

    public FingerprintSettableImage(final FingerPrintImageModel image) {
        this.image = image;
    }

    @SuppressLint("NewApi")
    @Override
    public void bindToView(final ImageView view) {

        synchronized (lock) {

            if (image == null) {
                view.setImageResource(R.drawable.drw_login_finger);
            } else {
                final Bitmap aux = ImageHelper.renderCroppedGreyscaleBitmap(
                        image.image, image.width, image.height);
                final int fpImageDisplayRule = FPReaderSettings
                        .getImageDisplayRules(view.getContext());
                if (fpImageDisplayRule == FPReaderSettings.DISPLAY_FP_IMAGE_FOR_PUNCH_AND_ENROLLMENT) {

                    Drawable d = new BitmapDrawable(view.getContext()
                            .getResources(), aux);
                    if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.ICE_CREAM_SANDWICH_MR1) {
                        view.setBackgroundDrawable(d);
                    } else {
                        view.setBackground(d);
                    }
                } else {
                    view.setBackgroundResource(R.drawable.drw_login_default_finger_image);
                }
                view.setImageResource(R.drawable.drw_login_finger_transparent);

                recycle();
                previousFPImage = aux;
            }
        }

    }

    @Override
    public void recycle() {
        if (previousFPImage != null && !previousFPImage.isRecycled()) {
            Log.d(TAG, "Recycling image " + previousFPImage.hashCode());
            previousFPImage.recycle();
        }
    }
}

---

也许我犯了一些愚蠢的错误，但我找不到它，有人能看看出了什么问题吗？

你能发布ImageHelper.RenderCroppedGreyscaleBramp吗？我在手机上，所以无法准确追踪错误，我知道，但我很确定你在代码中错误的位置回收了位图。调试代码并设置断点，在此处循环并创建位图

    public class ImageHelper {

    /**
     * Using the array generate a Bitmap object
     * 
     * @param yuvData
     * @param width
     * @param height
     * @return
     */
    public static Bitmap renderCroppedGreyscaleBitmap(byte[] yuvData,
            final int width, final int height) {
        int[] pixels = new int[width * height];
        int inputOffset = 0;

        for (int y = 0; y < height; y++) {
            final int outputOffset = y * width;
            for (int x = 0; x < width; x++) {
                final int grey = yuvData[inputOffset + x] & 0xff;
                pixels[outputOffset + x] = 0xFF000000 | (grey * 0x00010101);
            }
            inputOffset += width;
        }

        final Bitmap bitmap = Bitmap.createBitmap(width, height,
                Bitmap.Config.RGB_565);
        bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
        yuvData = null;
        pixels = null;
        return bitmap;
    }
}

@Override
public View onCreateView(final LayoutInflater inflater,
            final ViewGroup container, final Bundle savedInstanceState) {
        ...
        setResultImage();
        ...
    }

private void setResultImage() {
    FingerPrintImageModel fpImageModel = curLC.getFingerImage();
    image = new FingerprintSettableImage(fpImageModel);
    Log.d(TAG, "binding image" + aux.getTimestamp());
    image.bindToView(imageFP1);
}